Polishing-machine.



Patented June I9, 1900.

vAA). ERB. PoLlsHlNG MACHINE.

(Application filed Jan. 2, 1900.)

2 sheets-sheet i.

(No Model.)

mmumuul I jm NDW No. 65|,839. f Patented .lune I9, |900.

Y A. D. ERB.

POLISHING MACHINE.

(Applieation led Jan. 2, 1960.)

( NoModel.) 2 Shasta-Sheet 2..

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A`U1\nrrn1u STATESl PATENT FFIC.

AMENDAS D. ERB, OF PENNSBURG, PENNSYLVANIA.

POLISHING-MACHINE.

SPECIFICATION forming part of Lettersjlatent No. 651,839, dated .rune 19, 1900.

To all whom it may concern:

Be it known that I, AMENDAS D. ERB, acitizen of the United `States, residing at Pennsburg, county of Montgomery, and State of Pennsylvania, have invented a certain new and useful Improvement in Polishing-Machines, of which the following is a specification.

My invention relates to a new and useful improvement in polishing-machines, and has for its object to construct an exceedingly simple and effective machine of this description which is adapted to use strips of sandpaper, emery-cloth, or. other abrading material secured upon rolls, said rolls being so mounted as to be adjusted relative to each other so as to cause them tot the angles of panels for doors and the likeL With these ends in view this invention consists in the details of construction and combination of elements hereinafter set forth, and

then specifically designated by the claims.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, the construction and operation will now be described in detail, referring to the accompanying drawings, forming a part of this specification, in Which- Figure 1 is a longitudinal section of the machine; Fig. 2, a plan View; Fig. 3, a section taken at right angles to Fig. 1 Fig. 4, an enlarged section of one of the polishing-rolls, and Fig. 5 a plan view of the roll.

In carrying out my invention as here ernbodied, A represents the framework of the machine, which is of such design as to accommodate theoperating parts thereof, and B is a table supported by this frame. Two brackets Gand C are so bolted to the anges D and D' of the frame as to be adjustable to and from the perpendicular, and this is accomplished by the bolts E acting as pivots to the lower portion of the brackets, While the bolts F pass through slots G, so as to permit the upper ends of the brackets to be swung from the center of theV bolts E, and after the proper'adjustment ishad the bolts are set, so as to securely fasten the brackets in their adjustment.

H and H are vertical shafts journaled in boxes formed in the brackets, and these shafts 'tion by the spring L.

i Application met January 2,1900. sentira'. 153. Nomade-1 l is journaled in the sliding boxes K', and these boxes are normally held in an elevated posi- By this arrangement the friction-pulleyJ is constantly held in firm contact with the friction-pulleys I, so as to transmit the proper rotation thereto. A beveled gear M is also secured upon the short shaft K and meshes with the beveled gear N, which latter is secured upon the horizontal shaft O. A tight and loose pulley P and P', respectively, are secured upon the shaft O, so as to connect the machine to any suitable source of power.

The upper ends of the shafts H and H' are squared, as indicated at Q, and have the nuts R threaded thereon, so as to conveniently attach the polishing-rolls S thereto or detach them therefrom, by which means various-sized Vrolls may be used. Each of the rolls is hollow and has a groove formed in the periphery thereof into which the ends of the strip of sandpaper T may be drawn, and these ends are thenv firmly secured by the block U, being drawn into this groove by the threaded bolt V and the nut V' run thereon. This provides for the application of other strips of sandpaper when those previously placed upon the rolls have become worn, and as the block U lies below the surface of the roll it in no wise interferes with the action of said roll.

A gage W is adj ustably secured upon the table by means of the bolts X passed through the slots Y. A stripZ is located in the slot a in the table and is made adjustable vertically by the set-bolts b, the object of this strip being to support the work when being passed between the rolls, and by its adjustment the extent of the surface to be acted upon is determined. A suitable stop d is adjustably secured upon the table and serves to guide the work when being passed through the machine.

In operation the rolls are revolved ata high rate of speed and the work is placed against the gage W and passed between the rolls while resting upon the strip Z, during which time the rolls act upon both sides of the work and polish the same.

IOO

While my improved machine is adapted for use in connection with various classes of Work, it :is especially designed for Vpolishing' the beveled edges of panels for doors and the like, and, as shown in Fig. 3, the rolls are adjusted so as to stand at the angle ofthe bevel upon the work, thus Yonly requiring V`that the work be held against the gage.

Having thus fully described my invention, what I claim as new and useful isl. A sandpapering and polishing machine consisting of two adjustable brackets, two shafts journaled in said brackets, rolls carried by the upper ends of said shaft, frictionpulleys carried by the lower ends of the shaft, a semispherical friction-pulley adapted to bear against the rst-named pulleys, means for revolving the last-named pulleys, as specified.

2. In combination, a suitable frame, flanges formed with the frame, brackets pivoted to -the llanges and adjustably bolted at their upper ends, shafts journaled in said brackets, rolls detachably'securedl to the upper ends of the shaft, means for securing strips of abrading material upon said rolls, gages for guiding the work to the rolls, an adjustable supporting-strip upon which the work rests, friction-pulleyssecuredto the lower ends of said shafts, a short shaft journaled in a springpressed box whereby it will be forced against the first-named friction-pulleys, a beveled gear secured upon said short shaft, a beveled gear meshing with the irst-namedand means for revolving the last-named gear, as shown "and described;

In testimony whereof I have hereunto afiixed my signature in the presence of two subscribing witnesses.

AMENDAs D. ERB.

Witnesses:

E. W. SoHoLL, M. E. XANDER. 

